newer developments involve synthesis of adipic acid from butadiene; for example, by carbonylation of the intermediate 1,4-dimethoxy-2-butene (Monsanto), or two-step carbonylation of butadiene in the presence of methanol (BASF):
newer developments involve synthesis of adipic acid from butadiene; for example, by carbonylation of the intermediate 1,4-dimethoxy-2-butene (Monsanto), or two-step carbonylation of butadiene in the presence of methanol (BASF):